Date: Thu, 07 Nov 2002 10:35:01 -0500

Author: Sam Sampere

Subject: mod on eddy current


I bought some of those cool NdFeB magnetic spheres for various demos.
Here's a way cooler way to show the Eddy current tube.

First, roll the ball down a long piece of flat plastic. It's not very
spectacular, you get just what you expect. Then roll it down a long
piece of copper. I'm using a piece of 1/8" x 8" x 36" OFHC. The ball
very slowly rolls down the new incline. Repeat this several times until
the copper is vertical. It's just too cool!

The sheet is much cheaper than the thick walled tube, and much lighter